how to read the text file in c from command line

You can use as your main function: int main(int argc, char **argv) So, if you entered to run your program: C:\myprogram myfile.txt argc will be 2 argv[0] will be myprogram argv[1] will be myfile.txt To read the file: FILE *f = fopen(argv[1], "r");

how to read an entire text file from c program

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         #include <stdio.h>

int main()
{
    char *filename = "readme.txt";
    FILE *fp = fopen(filename, "r");

    if (fp == NULL)
    {
        printf("Error: could not open file %s", filename);
        return 1;
    }

    // read one character at a time and
    // display it to the output
    char ch;
    while ((ch = fgetc(fp)) != EOF)
        putchar(ch);

    // close the file
    fclose(fp);

    return 0;
}Code language: C++ (cpp)

Posted by: Guest on June-22-2021

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